Roche Diagnostics May 2009
Service Manual · Version 9.0 D-109
cobas b 221 system 7 Troubleshooting
Important test routines
Low pressure is built up between waste separator and main pump. To test for
tightness, the tested section is kept closed and the vacuum is measured with the baro
sensor. To test for blockages, the corresponding section is opened and the vacuum
reduction is measured with the baro sensor.
Starting the test: h Press [Start].
Printout: At the result screen of the general fluidics test, press h [Print].
Separator main pump range
Figure D-15 Separator main pump range